Each relation shown defines y as a function of x. Which function has the greatest rate of change? PLEASE HELP. A UNKNOWN.

B
x 0 2 4 6
y 2.50 4.03 5.56 7.09

C
y=1.3x+1

D
y=87x+3

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Ineed with math stuff it involves graphs

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?